Aus einem Vortrag, den ich vor 2 Wochen im Rahmen der DNUG mit Daniel Nashed gehalten habe:
Separate Disk with sufficient space
4,5 GB for Circular, much more for Archive Style depending on your server
Usually no need for a separate controller, etc any more
But you should ensure you have write cache enabled on your disk controller
Depending on your environment
if you have sufficient cache you don't necessarily need a separate disk either
But a strong requirement is a cached, low latency write
Even in a virtual environment translog should be on a separate VMDK file
Larger VMDK files can cause I/O contention specially with concurrent
NSF / Translog read/write operations